Terminal, radio communication method, and base station

Abstract

A terminal according to one aspect of the present disclosure includes a receiving section that receives a higher layer parameter indicating antenna switching as a usage for a sounding reference signal (SRS) resource set, and a control section that applies six or more SRS ports and six or more antenna ports according to terminal capability information related to the antenna switching. According to one aspect of the present disclosure, SRS transmission can be appropriately controlled when antenna switching is configured as a usage for an SRS.

1 .- 6 . (canceled) 
     
     
         7 . A terminal comprising:
 a receiver that receives a higher layer parameter indicating antenna switching as a usage of a sounding reference signal (SRS) resource set; and   a processor that controls, according to terminal capability information supporting 8 SRS ports and 8 reception ports for the antenna switching, a transmission of an SRS using the 8 SRS ports and the 8 reception ports.   
     
     
         8 . The terminal according to  claim 7 , wherein the processor controls the transmission of the SRS in up to two SRS resource sets configured with ‘semi-persistent’ as a resource type of the SRS resource set and up to one SRS resource set configured with ‘periodic’ as the resource type. 
     
     
         9 . The terminal according to  claim 8 , wherein two SRS resource sets configured with ‘semi-persistent’ as the resource type are not simultaneously activated. 
     
     
         10 . The terminal according to  claim 7 , wherein up to two of the SRS resource sets are configured, each SRS resource set having one SRS resource, a number of SRS ports for each SRS resource being 1, 2, 4, or 8. 
     
     
         11 . The terminal according to  claim 7 , wherein the terminal capability information indicates that less than 8 SRS ports and less than 8 reception ports are also supported. 
     
     
         12 . A radio communication method for a terminal, comprising:
 receiving a higher layer parameter indicating antenna switching as a usage of a sounding reference signal (SRS) resource set; and   controlling, according to terminal capability information supporting 8 SRS ports and 8 reception ports for the antenna switching, a transmission of an SRS using the 8 SRS ports and the 8 reception ports.   
     
     
         13 . A base station comprising:
 a transmitter that transmits, to a terminal, a higher layer parameter indicating antenna switching as a usage of a sounding reference signal (SRS) resource set; and   a processor that controls, according to terminal capability information supporting 8 SRS ports and 8 reception ports for the antenna switching, a reception of an SRS that is transmitted using the 8 SRS ports and the 8 reception ports by the terminal.   
     
     
         14 . A system comprising a terminal and a base station, wherein
 the terminal comprises:
 a receiver that receives a higher layer parameter indicating antenna switching as a usage of a sounding reference signal (SRS) resource set; and 
 a processor that controls, according to terminal capability information supporting 8 SRS ports and 8 reception ports for the antenna switching, a transmission of an SRS using the 8 SRS ports and the 8 reception ports, and 
   the base station comprises:
 a transmitter that transmits the higher layer parameter to the terminal; and 
 a processor that controls a reception of the SRS.